Results 111 to 120 of about 5,701 (239)

Noncommutative polygonal cluster algebras

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 4, April 2026.
Abstract We define a new family of noncommutative generalizations of cluster algebras called polygonal cluster algebras. These algebras generalize the noncommutative surfaces of Berenstein–Retakh, and are inspired by the emerging theory of Θ$\Theta$‐positivity for the groups Spin(p,q)$\mathrm{Spin}(p,q)$.
Zachary Greenberg   +3 more
wiley   +1 more source

Stochastic Blade Pitch Angle Analysis of Controllable Pitch Propeller Based on Deep Neural Networks

open access: yesModelling
The accuracy of the blade pitch angle (BPA) motion in controllable pitch propellers (CPPs) is considered crucial for the efficacy and reliability of marine propulsion systems.
Xuanqi Zhang   +4 more
doaj   +1 more source

Application Value of Slider-Crank Mechanism in Pick-and-Place Operation of Delta Robot

open access: yesMATEC Web of Conferences, 2018
By absorbing the advantages of the rotary-driven Delta robot and linear-driven Delta robot, a Delta robot for pick-and-place operation that forms a crank-slider at the drive joint is designed.To take the most common gate shaped curve in Cartesian space ...
Zhe QIN   +3 more
doaj   +1 more source

Walking robot: A design project for undergraduate students [PDF]

open access: yes
The design and construction of the University of Maryland walking machine was completed during the 1989 to 1990 academic year. It was required that the machine be capable of completing a number of tasks including walking a straight line, turning to ...

core   +1 more source

Experimental and numerical investigations of a pendulum driven by a low-powered DC motor. [PDF]

open access: yes, 2015
The work is a continuation of numerical and experimental investigations of a system consisting of a single pendulum with the joint horizontally driven by the use of a crank-slider mechanism and DC motor.
Awrejcewicz, Jan   +5 more
core  

Wear Analysis of Crank Slider Mechanism based Stationary Clearance Link Model

open access: yesJixie chuandong, 2021
Wear is one of the main causes of the failure of mechanical equipment and mechanical parts. The coupling between wear and dynamic response of system has an important effect on the performances of mechanism.
Rufei Yu, Wei Chen
doaj  

Transmission Design and Simulation Analysis of Lower Exoskeleton Rehabilitation Device

open access: yesJixie chuandong, 2016
The hydraulic lower exoskeleton rehabilitation device is proposed to solve the problem of patient lying on the bed can’t walk and the aged leg rehabilitation training.
Hu Qingming, Guo Qiang, Guo Jianhua
doaj  

Design and Analysis of Underactuated compliant mechanisms [PDF]

open access: yes, 2012
Precession and accuracy are important in several mechanisms in practical use. Compliant mechanism provides a solution for such mechanical design problems. It has several other advantages over rigid body mechanism.
Behera, Deepak
core  

磨损对曲柄压力机滑块机构运动可靠性的影响

open access: yesJixie chuandong, 2005
Based on the theories of reliability engineering and probability design, the effect of abrasion in games of slider - crank mechanism on the motion reliability of crank press was analyzed.
孙现龙, 廖勇刚, 余心宏
doaj  

Engine balance apparatus and accessory drive device [PDF]

open access: yes, 2000
A balancing mechanism for an engine that has a rotating crankshaft and reciprocating pistons such as those engines used in automobiles, aircrafts, boats, piston-driven compressors, piston-driven slider crank mechanisms, etc.
Brogdon, James William   +1 more
core   +1 more source

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